Astral - Eidolin suggestion

[Verzen]

There ought to be an astral Eidolon for maybe dark archive?

With attacks that deal mental damage (and require a will save for half damage) rather than physical damage. This would be able to allow a summoner to create a shadow figment that attacks the mind. Kind of a unique twist for an Eidolon.

[WWHsmackdown]

I like it! The first ability it gets could maybe be the mental damage thing youre talking about, like the dragons two action breath weapon. Other than that martial damage probably shouldn't be save based. Just my two cents.